巨菌草对Cu、Cd污染土壤的修复潜力

The Remediation Potential of Pennisetum sp On Cu、Cd Contaminated Soil

通过田间小区试验,对比研究了土著植物金黄狗尾草、香根草、海州香薷、巨菌草分别与0.21%石灰联合对Cu、Cd复合污染土壤的修复效果。结果表明,石灰处理可以显著提高土壤pH,降低土壤有效态Cu、Cd含量。4种植物在与石灰联合后均有一定的生产潜力,且表现为巨菌草>海州香薷>香根草>金黄狗尾草;修复潜力方面表现出与生产潜力相同的趋势。

A field plot experiment was set up to test the remediation effects in a Cu and Cd contaminated soil by applying indigenous plants Setaria lutescens, Vetiver zizanioides, Elsholtzia splendens, Pennisetum sp combined respectively with 0. 21% lime. The results showed that lime treatment can significantly improve the soil pH and reduce soil available Cu, Cd content. Four plants combined with lime has certain production potential, and for the performance of Pennisetum sp 〉 Elsholtzia splenderts 〉 Vetiver zizanioides 〉 Setaria lutescerts. Remediation potential showed the same trend with the production potential.